CORPORATE LOANS AND ALLOWANCE FOR LOAN LOSSES (Details 9) - Predecessor Company	4 Months Ended	12 Months Ended
	Apr. 30, 2014 USD ($) issuer loan	Dec. 31, 2013 USD ($) issuer loan
Troubled debt restructurings:
Sustained period of repayment performance for determining the reclassification of restructured loans from non-accrual to accrual status (in months)	6 months
Pre-modification outstanding recorded investment	$ 195,422,000	$ 70,028,000
Post-modification outstanding recorded investment	$ 24,571,000	$ 40,659,000
Number of issuers troubled debt restructurings | issuer	2	3
Financing receivable modifications extension period of maturity date (in years)		4 years
Higher coupon rate for extended period (as a percent)	4.00%	6.80%
Charge-offs recorded related to TDR's	$ 1,100,000	$ 26,800,000
Charge-offs related to TDR's as a percentage of charge-offs related to loans and losses (as a percent)	76.00%	86.00%
Charge-offs recorded	$ 1,500,000	$ 31,300,000
Lending commitment to borrower whose loans had been modified in the troubled debt restructuring	$ 0
Number of loans modified as TDRs in default | loan	0
Modified amortized cost of corporate loans that did not qualify as TDRs	$ 1,100,000,000	$ 2,400,000,000
Minimum
Troubled debt restructurings:
Financing receivable modifications extension period of maturity date (in years)	3 years
Maximum
Troubled debt restructurings:
Financing receivable modifications extension period of maturity date (in years)	5 years
Corporate Loans
Troubled debt restructurings:
Number of TDRs (loans) | loan	1	2
Pre-modification outstanding recorded investment	$ 154,075,000	$ 68,358,000
Post-modification outstanding recorded investment	0	39,430,000
Estimated fair value of equity received from the TDRs excluded from post-modification outstanding recorded investment	$ 92,000,000	$ 2,100,000
Number of TDRs identified as impaired (in issuers) | loan	1	2
Charge-offs recorded	$ 1,458,000	$ 31,285,000
Corporate loans, at estimated fair value
Troubled debt restructurings:
Number of TDRs (loans) | loan	2	1
Pre-modification outstanding recorded investment	$ 41,347,000	$ 1,670,000
Post-modification outstanding recorded investment	24,571,000	$ 1,229,000
Estimated fair value of equity received from the TDRs excluded from post-modification outstanding recorded investment	$ 12,300,000
Number of loans carried at estimated fair value | loan	2